On the suppression of zinc-copper interactions in square wave anodic stripping voltammetry in flowing solution by addition of gallium ions

• Type: Article in International Scientific Journal
• Date: 1997

Authors

Brett, CMA (Author) Other; M. Beatriz Q. Garcia (Author) FFUP; Lima, JLFC (Author) FFUP

Journal

Title: Analytica Chimica Acta

Vol. 339

Pages: 167-172

ISSN: 0003-2670

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 25 Citations

Scopus - 27 Citations

Other information

Authenticus ID: P-001-BYD

DOI: 10.1016/s0003-2670(96)00459-x

Abstract (EN): The problems arising from the formation of copper-zinc intermetallic compounds in square wave anodic stripping voltammetry at wall-jet mercury thin-film electrodes in continuous flow systems have been investigated. These effects are reduced to zero by spiking the analyte solution with gallium ions and ensuring a sufficiently low value of pH, either by using acetate buffer or acidifying the generally-used sodium perchlorate electrolyte. Advantages of this approach are assessed, as are the benefits of stopping solution flow during the determination step of each experiment.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6